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From Sumit Mohanty <smoha...@hortonworks.com>
Subject Re: Review Request 43557: App Timeline server failed to start due to java.lang.ClassNotFoundException: Class org.apache.hadoop.yarn.server.timeline.Entit yGroupFSTimelineStore
Date Sat, 13 Feb 2016 18:11:59 GMT


> On Feb. 13, 2016, 8:35 a.m., Matt wrote:
> > ambari-server/src/main/resources/stacks/HDP/2.3/services/YARN/configuration/yarn-site.xml,
line 73
> > <https://reviews.apache.org/r/43557/diff/1/?file=1241153#file1241153line73>
> >
> >     Why does this parameter have to be changed?
> >     
> >     It was changed in November 2015: https://issues.apache.org/jira/browse/AMBARI-13936

> >     
> >     Just wondering why the failure because of this parameter showed up now and not
in the last 4 months.
> 
> bhuvnesh chaudhary wrote:
>     @Dmytro may be able to guide us why this parameter was set to use EntityGroupFSTimelineStore
earlier, but its not working now.
>     I believe this ATS has been failing since last couple of days and the status was
red, but since service check does not captures it, probably didn't block anything and was
overlooked.

I do not think we should make this change. Latest (HDP-2.3.4+) versions of HDP needs the value
to be EntityGroupFSTimelineStore but older HDP-2.3 does not work with that. So depending on
which version is being deployed you will see one or the other error.  Ambari does not have
support for such changes when its in the 3rd digit releases. So we decided to favor newer
releases.


- Sumit


-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/43557/#review119144
-----------------------------------------------------------


On Feb. 13, 2016, 6:03 p.m., bhuvnesh chaudhary wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/43557/
> -----------------------------------------------------------
> 
> (Updated Feb. 13, 2016, 6:03 p.m.)
> 
> 
> Review request for Ambari, Alejandro Fernandez, Dmytro Sen, jun aoki, Jayush Luniya,
Oleksandr Diachenko, Richard Zang, Sumit Mohanty, and Yusaku Sako.
> 
> 
> Bugs: AMBARI-15042
>     https://issues.apache.org/jira/browse/AMBARI-15042
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> App Timeline server failed to start due to java.lang.ClassNotFoundException: Class org.apache.hadoop.yarn.server.timeline.EntityGroupFSTimelineStore
> 
> #Snippet from logs:
> Server failed in state INITED; cause: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.ClassNotFoundException: Class org.apache.hadoop.yarn.server.timeline.EntityGroupFSTimelineStore
not found
> ...
> Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hadoop.yarn.server.timeline.EntityGroupFSTimelineStore
not found
> 
> There is no class EntityGroupFSTimelineStore available, the value of parameter yarn.timeline-service.store-class
should be set as below: org.apache.hadoop.yarn.server.timeline.LeveldbTimelineStore
> 
> 
> Diffs
> -----
> 
>   ambari-server/src/main/resources/stacks/HDP/2.3/services/YARN/configuration/yarn-site.xml
8b6709d 
> 
> Diff: https://reviews.apache.org/r/43557/diff/
> 
> 
> Testing
> -------
> 
> yes. manual
> 
> 
> Thanks,
> 
> bhuvnesh chaudhary
> 
>


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